Aeronautical apparatus



p 1929- A. R. SCHAD I 1,728,806

' AERONAUTICAL APPARATUS Filed May 51, 1927 Z0 ooooooooooo- 75 oooopoooooo h 6 .46 .oooooooooooo hq/ 0 000000 OOOQO MI. 0 eooooooo 8: 00000000000 -Ooooooo0- I 0 0000000 0009 0000000, .,!g gO0000O000 00000000000090 000O0O000000OO D 000000000000 ATTORNEY Patented Sept. 17, 1929 UNITED STATES PATENT OFFICE 41:01.1 a. scannercmanmmn, TEXAS AEBONAU'IICAL APPARATUS Application filed Iay 31,

Among the objects of my invention is to provide a wing structure for so called aero planes which will embody considerable strength, particularly in points where the stress is greatest.

Another object of my invention is to rovide a wing structure which will embo y a formation such that the lifting power of the shi will be increased.

further object of the invention is to rovide a wing structure for aeroplanes w ich will embody a large surface in the region 1n juxtaposition tothe propeller in order that the propeller shall be more effective.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings, showing the preferred form of construction and in which: I

Fig. 1 is a front elevational view of my rmproved wing structure applied to the fuselage of a heavier than air air craft;

Fig. 2 is a plan view of my improved wing structure;

Fig. 3 is a sectional detail VleW thereof taken in the plane of the line 3-3 on Flg. 2; and

Fig. 4 isa sectional detail view of a securing means employed in the device.

Referring to the drawings wherein the preferred embodiment of my invention is illustrated, it may be seen that I provide a wing structure 10 that is adapted to be secured to the fuselage 11 of a standard air craft by means of the supporting brackets 12. Preferably, the supporting brackets 12am made so as to embody chambers which may be utilized for the storing of fuel. oil, or water. Inasmuch as these brackets 12 are of hollow construction-and due to the curved formation thereof, theyembody considerable strength 1927. Serial No. 195,476.

as well as being lighter than solid braces of equal strength.

Referring particularly to Fig. 1, it may beseen that I form the wing so as to embody an arched portion in the region adjacent the fuselage 11. This arched portion in this region provides considerable surface on which the air moved by the propeller may act. Inasmuch as the lifting power of air craft is directly proportionate to the surface exposed to moved air it is apparent that this-struc ture will embody considerable advantage over the prior straight wing structure;

I contemplate making my improved wing entirely of metal so that it maybe used in 6 connection with socalled all metal air craft and preferably the metal employedis aluminum or a similar light substance which embodies appreciable tensile strength such as duralumin. Referring to Fig. 3 it ma be 7 seen that Iform the lower section13 o the wing of a single piece of metal shaped so as to embody the desired configurations. The section 13 includes laterally extending ed 0 portions 14; The upper section 15 of t% metal'and is also shaped so as to embod the desired configuration. 1 This section inc vudes lip portions 16 which are adapted to be bent around the lip sections .14 so as to securel clamp the two sections 15 together. Pre erably the sections 13 and 15 are spaced apart so as to form a hollow chamber within the wing'structure. It is to be understood that while it is preferable thatthe sections of the wing structure be formed of single ieces of metal that they can be constructed 0 a number of sections welded together or otherwise suitably joined so as to be analogous to a single piece of metal.

In order. to revent the collapse of the wing structure provide a plurality of brace members 17 the unassembled formation of which is best depicted in Fig. 4. These bracing members are preferably mounted in a manner depicted in Fig. 3.- Aligned openings are provided in the sections 13 and 15 and the portions 18 and 19 of the bracing members 17 are fitted through these open ings. The sections 18 and 19 are then 100 e 75 wing structure is formed of a single piece of crimped down so as to engage the sections 15 and 13 and thus prevent the collapsing of these members. This brace structure also adds to the tensile strength of the wing structure and inasmuch as the wing is formed of relatively thin pieces-of metal these brace members function to strengthen the structure by making the device analogous to a solid sheet. 1 Further, it is well understood in the art that convex formation of closed bodies adds to the strength thereof and since the brace members add to the strength of the convex formation it is readily apparent that I have provided a structure which embodies considerable tensile strength.

A valve member 20 is provided in the chamber defined between the sections 15 and 17 .nd by attaching an air exhausting means on to this valve memberthe air may be exhausted from this chamber. After the air has been exhausted from the chamber a gas lighter than airmay be introduced therein so as to further reduce the weight of the structure. The gas introduced may be hydrogen, helium or other analogous light gases; helium being preferable due to its non-inflammable properties.

It is apparent from the foregoing that I have provided a wing structure for aeroplanes which will embody considerable strength and yet which will be very light in weight. I have also provided a formation for this wingstructure such that considerable surface is provided in the region in which the most air is moved in order that the lifting power of the plane shall be increased.

IVhile I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification, without depart.- ing from the spirit of the invention. I. there fore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention what I claim as new and desire to protect by Letters Patent is:

1. A wing structure for aeroplanes comprising two plates adapted to have the edge portions thereof arranged in engaging position and adapted to have the portions intermediate said edge portions spaced from each other to provide a chamber, said plates hav ing aligned openings formed therein, and sleeve members extending through said openings and through said chamber adapted to brace said plates, said sleeve members including enlarged portions at the lower ends thereof and including portions adapted to be crlimped around the openings in the upper p ate.

2. A wing structure for aeroplanes comprising a lower substantially fiat plate having a lip portion provided around the edges thereof, an upper plate embodying a curved formation adapted to be arranged above said lower plate, said last named plate including a lip portion adapted to be arranged in juxtaposition with said lip on said first named plate and including a portion adapted to be bent around said lip whereby to secure said upper plate in position over said lower plate whereby to provide a gas-tight chamber between said plates, said plates having a plurality of aligned openings formed therein, sleeve members adapted to be extended through said aligned openings, said sleeve members including lip formations at one end thereof adapted to engage said lower plate whereby to prevent leakage past the sleeve members through the openings in said plate, said sleeve members including portions adapted to be extended through the openings in the upper plate and said portions being adapted to be crimped whereby to prevent leakage through said openings past said sleeve members. 7

3. A wing structure for aeroplanes comprising a lower substantially fiat plate having a lip portion provided around the edges thereof, an upper plate embodying a curved formation adapted to be arranged above said lower plate, said last named plate including a lip portion adapted to be arranged in juxtaposition with said lip on said first nam'ed plate and including a portion adapted to be bent around said lip whereby to secure said upper plate in position over said lower plate whereby to provide a gas-tight chamber between said plates, said plates having a plurality of aligned openings formed therein, sleeve members through said aligned openings, said sleeve members including lip formations at one end thereof adapted to engage said lower plate whereby to prevent leakage past the sleeve members through the openings in said plate, said sleeve members including portions adapted to be extended through the openings in the upper plate and said portions being adapted to be crimped whereby to prevent leakage through said openings past said sleeve members, said plates being adapted to be of greater length than the width thereof and being adapted to embody a concavo-convex portion at substantially the mid point in the extent thereof.

In testimony whereof I aflix my signature.

ADOLF R. SOHAD.

adapted to beextended, 

